<template>
  <scroll id="tab-menu">
    <div class="menu-list">
      <div class="menu-list-item" :class="{active:index===currentIndex}" v-for="(item,index) in categories" :key="index" @click="itemClick(index)">
        {{item.title}}
      </div>
    </div>
  </scroll>
</template>

<script>
import Scroll from 'components/common/scroll/Scroll' 

  export default {
    name:'TabMenu',
    props:{
      categories:{
        type:Array,
        default(){
          return []
        }
      }
    },
    data () {
      return {
        currentIndex:0
      };
    },

    components: {
      Scroll
    },
    methods: {
      itemClick(index){
        this.currentIndex=index
        this.$emit('selectItem',index)
      }
    }

  }

</script>
<style scoped>
#tab-menu{
  background-color: #f6f6f6;
  height: 100%;
  width: 100px;
  box-sizing: border-box;
}
.menu-list-item{
  height: 45px;
  line-height: 45px;
  text-align: center;
  font-size: 14px;

}
.menu-list-item.active{
  font-weight: 700;
  color: var(--color-high-text);
  background-color: #fff;
  border-left: 3px solid var(--color-high-text);
}
</style>